CN101763995B - Circuit breaker contact with self-locking function - Google Patents
Circuit breaker contact with self-locking function Download PDFInfo
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- CN101763995B CN101763995B CN2009101556911A CN200910155691A CN101763995B CN 101763995 B CN101763995 B CN 101763995B CN 2009101556911 A CN2009101556911 A CN 2009101556911A CN 200910155691 A CN200910155691 A CN 200910155691A CN 101763995 B CN101763995 B CN 101763995B
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- contact
- slide block
- contact body
- rotating shaft
- circuit breaker
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Abstract
The invention discloses a circuit breaker contact with self-locking function, comprising a rotary shaft, a contact body and a contact shaft, wherein a front part of the contact body is provided with a contact spot and a rear part of the contact body is provided with a hole through which the contact shaft penetrates, the contact body is mounted inside the rotary shaft via the contact shaft, a contact spring and a slide block are arranged between the contact body and the rotary shaft, the lower end of the contact spring is mounted inside an accommodation groove of the rotary shaft while the upper end of the contact spring is mounted on the slide block, the slide block which is positioned below the root of the contact can be mounted inside a vertical guide groove in a vertically moveable manner, a rear end of the cross section of the contact body is in the shape of circular arc, a side of the slide block, towards the rear end of the contact body, is a slope, an upper bottom surface of the slide block is smaller than a lower bottom surface, and the slope is in arc transition with the upper bottom surface. The circuit breaker contact can effectively prevent secondary contact between contacts and enhance the analysis capacity of the circuit breaker.
Description
Technical field
The present invention relates to field of circuit breakers, especially a kind of contact of breaker.
Background technology
Low-voltage electrical apparatus be national product with life in crucial product, the conveying and the distribution of electric energy played many-sided effect such as protection, control, almost be penetrated into all and use electrical domain, be the important assurance of safety utilization of electric power.Low-voltage electrical apparatus is various in style, and is large in number and widely distributed, and structure is different, particularly gets into after the nineties, and the social production requirement low-pressure electronic equipment product performance of develop rapidly is higher, volume is littler, internal mechanism is compact more.
At present, in order to improve the breaking capacity of circuit breaker, each big manufacturer becomes double-breakpoint structure with the contact design of circuit breaker one after another both at home and abroad, and the two components contact that breaks is promptly arranged.Improve product greatly and used amount silver-colored, copper, increased product cost, wasted material.
Existing breaker of plastic casing all is that the dropout through transmission mechanism makes the contact system disjunction when doing big electric current disjunction test; Feeding big electric current in a flash; Can produce powerful electric power between dynamic and static contact; This electric power is scolded out dynamic and static contact by force, because moving contact all is to lean on the active force of spring that it is resetted, scolding when reaching the guide vane end stop position when contact can resilience; Just might cause dynamic and static contact secondary contact, serious scaling loss circuit breaker if fail to accomplish disjunction in the mechanism of this cycle inner breaker.
Summary of the invention
Can not prevent the secondary contact between the contact, the deficiency of breaking capacity difference for what overcome existing contact of breaker, the present invention provides a kind of contact of breaker with auto-lock function that can effectively prevent the contact of the secondary between the contact, improve the breaking capacity of circuit breaker.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of contact of breaker with auto-lock function comprises rotating shaft, contact body and contact axle, and the front portion of said contact body is provided with the contact; The rear portion of said contact body is provided with in order to wear the hole of contact axle; Said contact body is installed in the rotating shaft through the contact axle, is provided with touch spring and slide block between said contact body and the rotating shaft, and the lower end of said touch spring is installed in the holding tank of rotating shaft; Install on the slide block upper end of said touch spring, and said slide block is positioned at the below of said contact root; Said slide block can be installed in the said vertical guide groove up or down, and the rear end of said contact body cross section is circular arc, is the inclined-plane towards the side of the slide block of said contact body rear end, and the upper bottom surface of slide block is littler than bottom surface, said inclined-plane and upper bottom surface arc transition.
The rear end of said contact body is positioned at the upper bottom surface of slide block when the normal position, the root of said contact body is positioned at when opening on the inclined-plane of slide block.
As preferred a kind of scheme: said holding tank is provided with the guiding rib of vertical layout, and the chute of said slide block two sides is installed on the said guiding rib.Also can be chosen in to hold gathering sill is set on the grass, said slide block two sides are provided with guiding rib.
Further, the cross section of said slide block is trapezoidal shape.Certainly, also can slide block be set to other shape, as long as the shape of inclined-plane and upper bottom surface is definite.
Further again, the bottom surface of said slide block is provided with projection, and the upper end of said spring is sleeved in the said projection, and said rotating shaft is provided with salient point, and the lower end of said spring is sleeved on the said salient point.
Technical conceive of the present invention is: the function of self-locking contact: test under the big function of current in disjunction; Contact scold out let contact body root sliding point forward on the slide block hypotenuse in a flash the time of short duration residence time arranged; This point that breaks off is pinned; Let the mechanism of circuit breaker have sufficient time to make mechanism action to accomplish the disjunction of contact, be unlikely to the secondary resilience of contact.After mechanism threaded off, the lid that relies on contact to get to circuit breaker resetted contact again.
Beneficial effect of the present invention mainly shows: 1, can effectively prevent the secondary contact between the contact; 2, improve the breaking capacity of circuit breaker; 3,, then have advantage simple in structure, good reliability, and, save noble metals such as a large amount of copper, silver owing to use the single contact structure with respect to double-breakpoint structure of the prior art.
Description of drawings
Fig. 1 is the structural representation that the present invention has the contact of breaker of auto-lock function.
Fig. 2 is the sketch map of the normal gate-dividing state of contact.
Fig. 3 is that contact receives electric power to scold out the sketch map of state.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1～Fig. 3; A kind of contact of breaker with auto-lock function comprises rotating shaft 6 and contact body, and the front portion of said contact body is provided with contact 2; The root of said contact 2 is equipped with flash barrier 4; With itself and contact 1 fixed installation, said contact rear portion is provided with installing hole to said flash barrier through rivet 3, and said contact body is connected with rotating shaft 6 through contact axle 5; Said rotating shaft 6 is provided with slide block 7 and cooperates the guiding rib c that slides; Side towards the slide block of said contact body rear end is the inclined-plane; There is circular arc excessive between the inclined-plane of slide block and the upper bottom surface; There is a projection bottom of said slide block 7, base on the trapezoidal shape slide block, b point position of said slide block 7 contact body 1-4 when normal separating brake, and the b point position of contact body 1-4 was at the hypotenuse of trapezoidal shape slide block when said slide block was scolded out at large-current electric power; The touch spring 8 that slide block is resetted is installed between the bottom of said slide block and the rotating shaft; One end of said spring 8 is installed in and prevents on the projection of slide block 7 bottoms that string is moving, and the other end of said spring 8 is installed on the projection of rotating shaft 6 and prevents that string is moving, contacts with rotating shaft 6 when said touch spring 8 is delivered to a point position of contact body through slide block 7 with power to make the contact body spacing.
The course of work of present embodiment is:
When the contact body receives electrodynamic action and 2 positions, contact is up promoted; Can up push away for propping up the contact body of naming a person for a particular job with contact axle 5; The active force that slide block 7 is ordered with contact 1 root b down compresses touch spring 8 along the guiding rib c in the rotating shaft 6, when the hypotenuse of the circular arc of contact 1 root and trapezoidal slide block 7 is tangent, because of slide block 7 has the guiding rib c of rotating shaft 6 that its left and right sides is spacing; Can only move toward above-below direction; The circular arc of contact body blocked it when this moment, slide block 7 up promoted, and caused whole contact body 1-4 just can't up push away again, was trapped in this position.This moment, the operating mechanism of circuit breaker had the enough time to accomplish to thread off action, prevented that effectively contact from scolding out the back directly to make the resilience that resets of contact body by the active force of touch spring 8 under the electrodynamic action that big electric current produces.As contact body resetting time less than the operating mechanism break-time, then can make the contact of dynamic/static contact secondary, influence the disjunction quality.
Claims (4)
1. the contact of breaker with auto-lock function comprises rotating shaft, contact body and contact axle, and the front portion of said contact body is provided with the contact; The rear portion of said contact body is provided with in order to wear the hole of contact axle, and said contact body is installed in the rotating shaft through the contact axle, is provided with touch spring and slide block between said contact body and the rotating shaft; Said slide block can be installed in the vertical guide groove up or down; The rear end of said contact body cross section is circular arc, is the inclined-plane towards the side of the slide block of said contact body rear end, and the upper bottom surface of slide block is littler than bottom surface; It is characterized in that: said inclined-plane and upper bottom surface arc transition; The lower end of said touch spring is installed in the holding tank of rotating shaft, and the upper end of said touch spring is installed on the slide block, and said slide block is positioned at the below of said contact root; Said rotating shaft is provided with slide block and cooperates the guiding rib that slides, and slide block can move along the guiding rib above-below direction in the rotating shaft.
2. the contact of breaker with auto-lock function as claimed in claim 1 is characterized in that: said guiding rib vertically is arranged on the said holding tank of said rotating shaft, and the chute of said slide block two sides is installed on the said guiding rib.
3. according to claim 1 or claim 2 the contact of breaker with auto-lock function, it is characterized in that: the cross section of said slide block is trapezoidal shape.
4. according to claim 1 or claim 2 contact of breaker with auto-lock function; It is characterized in that: the bottom surface of said slide block is provided with projection; The upper end of said touch spring is sleeved in the said projection, and said rotating shaft is provided with salient point, and the lower end of said touch spring is sleeved on the said salient point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101556911A CN101763995B (en) | 2009-12-29 | 2009-12-29 | Circuit breaker contact with self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101556911A CN101763995B (en) | 2009-12-29 | 2009-12-29 | Circuit breaker contact with self-locking function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101763995A CN101763995A (en) | 2010-06-30 |
| CN101763995B true CN101763995B (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101556911A Active CN101763995B (en) | 2009-12-29 | 2009-12-29 | Circuit breaker contact with self-locking function |
Country Status (1)
| Country | Link |
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| CN (1) | CN101763995B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104733265B (en) * | 2015-03-23 | 2017-10-31 | 厦门宏发开关设备有限公司 | A kind of moving contact reprimand of breaker opens rear self-locking structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6040747A (en) * | 1996-09-07 | 2000-03-21 | Ellenberger & Poensgen Gmbh | Overcurrent circuit breaker |
| CN101009174A (en) * | 2006-01-25 | 2007-08-01 | 大全集团有限公司 | Rotating axis locking mechanism |
| CN101533744A (en) * | 2008-09-26 | 2009-09-16 | 厦门宏美电子有限公司 | Falling-preventing structure after moving contact of current-limiting circuit breaker with a plastic shell is opened |
| CN201608132U (en) * | 2009-12-29 | 2010-10-13 | 宁波奇乐电气集团有限公司 | Circuit breaker contact with self-locking function |
-
2009
- 2009-12-29 CN CN2009101556911A patent/CN101763995B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6040747A (en) * | 1996-09-07 | 2000-03-21 | Ellenberger & Poensgen Gmbh | Overcurrent circuit breaker |
| CN101009174A (en) * | 2006-01-25 | 2007-08-01 | 大全集团有限公司 | Rotating axis locking mechanism |
| CN101533744A (en) * | 2008-09-26 | 2009-09-16 | 厦门宏美电子有限公司 | Falling-preventing structure after moving contact of current-limiting circuit breaker with a plastic shell is opened |
| CN201608132U (en) * | 2009-12-29 | 2010-10-13 | 宁波奇乐电气集团有限公司 | Circuit breaker contact with self-locking function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101763995A (en) | 2010-06-30 |
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